"Look there," he said. "That is where we are going, if there is any possible way to go. An optimist would stand here and wait, certain that wings would soon sprout for him to fly up; a pessimist would sit down and quit. An optimist is a fool; a pessimist is a worse fool." "And which are you?" asked Ashton. "I am neither. I am a meliorist. I am going to face the facts, and then fight for all I'm worth. What's more, you're going to do the same. Come! We've still got some clothes left, the rod for you to use as a staff, this rope, the revolver, and seventeen cartridges. It's fortunate we have any. We've got to signal that we are going on down the canyon, instead of back up." "We may as well stay and die here. But since you prefer to keep moving, I have no objections," said Ashton, with ironical politeness. Blake promptly stepped into the water and led the way to the next shelf of rock. Here he fired a shot. Going a few yards farther along the rocks, he fired again. Three times he fired, at intervals of two minutes. Then the white dot of the flag appeared on the precipice brink directly up across from him. "Once more, and we're sure they understand," he said. Advancing a full hundred yards on down the canyon, he fired the fourth shot. Very soon the fleck of white flaunted on the rim a little way beyond them. "They understand!" cried Blake. "Trust Jenny to use her head! Now catch your breath and tighten up. We're going to move!" He started, and Ashton followed close behind. It was the same rough, fierce game of leaping, crawling, wading, swimming,--battling with the river, the rocks, the ledges. But now they were no longer checked and halted by the alternate stoppings for set-ups and turning-points, and no longer was Blake encumbered with the care of the level. There was nothing now to hinder or delay them except the natural obstacles of their wild path down the bed of the torrent. Blake could give all his thought to picking the best and quickest way through rapids and falls, over the water-washed rocks and along the side ledges. And he could give all his great strength to helping his companion past the hard places. In return Ashton gave such help as he could to the engineer, many times when a steadying hand or the outstretched rod rendered easier a descent or the fording of some swift mill race in the stream. At the end of the first quarter-mile Blake had fired a shot, and again at the second quarter. After that he waited longer intervals. He considered it advisable to husband the few remaining cartridges. The river was now rapidly rising. But every inch of added depth found the two fugitives much farther down the canyon. In two hours they advanced thrice the distance that they had covered in the same time before noon, and this despite the increasing depth and force of the river.